特高压对河北南网500 kV电压水平影响研究

Influence Study of UHV on 500 kV Voltage Level of Hebei Southern Power Grid

利用PSD-BPA软件对特高压投产前后河北省南部电网500 kV电压进行计算分析,计算结果表明:特高压投产后河北省南部电网500 kV电压水平普遍提高,同时造成部分500 kV站点低压侧电压过高,使得电容器难以投入,限制了电网电压调整能力,分析结果可为以后500 kV变压器额定电压的选取提供参考。

PSD-BPA software is used to calculate and analyze the 500 kV voltage of Hebei southern power grid before and after UHV operation. The results show that the voltage level of 500 kV in Hebei southern power grid is generally increased after the UHV is put into operation,and the voltage on the low voltage side of some 500 kV stations is too high,which makes the capacitor difficult to be put into operation,which limits the voltage regulation ability of the grid. The analysis results can provide reference for the selection of the rated voltage of 500 kV transformer.